The Letter of Petrus Peregrinus on the Magnet, A.D. 1269
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Table of contents
1. Front matter2. INTRODUCTORY3. PART I4. PART I CHAPTER I PURPOSE OF THIS WORK5. CHAPTER II QUALIFICATIONS OF THE EXPERIMENTER6. CHAPTER III CHARACTERISTICS OF A GOOD LODESTONE7. CHAPTER IV HOW TO DISTINGUISH THE POLES OF A LODESTONE8. CHAPTER V HOW TO DISCOVER THE POLES OF A LODESTONE AND HOW TO TELL WHICH IS NORTH AND WHICH SOUTH9. CHAPTER VI HOW ONE LODESTONE ATTRACTS ANOTHER10. CHAPTER VII HOW IRON TOUCHED BY A LODESTONE TURNS TOWARDS THE POLES OF THE WORLD11. CHAPTER VIII HOW A LODESTONE ATTRACTS IRON12. CHAPTER IX WHY THE NORTH POLE OF ONE LODESTONE ATTRACTS THE SOUTH POLE OF ANOTHER AND VICE VERSA13. CHAPTER X AN INQUIRY INTO THE CAUSE OF THE NATURAL VIRTUE OF THE LODESTONE14. PART II15. PART II CHAPTER I THE CONSTRUCTION OF AN INSTRUMENT FOR MEASURING THE AZIMUTH OF THE SUN THE MOON OR ANY STAR ON THE HORIZON16. CHAPTER II THE CONSTRUCTION OF A BETTER INSTRUMENT FOR THE SAME PURPOSE17. CHAPTER III THE ART OF MAKING A WHEEL OF PERPETUAL MOTION18. NOTES19. Transcriber’s Notes